Group 1 will be the control group. They will complete questionnaires but will otherwise receive usual care from their Primary Care Provider (PCP). At the end of the study period they will be given the Study Materials for participating.

Group 3 (Group Intervention) will receive the Study Materials at the beginning of the study and will also be invited to attend two REACH for Independence group sessions.

Group 4 (Full Intervention) will receive the Study Materials at the beginning of the study, will be invited to attend the REACH for Independence group sessions, and will be invited to a Transition Consult with an MD and social worker.

Group 2 (Basic Intervention) will receive the Study Materials at the beginning of the study but will otherwise continue with their usual PCP care.

REACH for Independence is a transition and self-care skill-building peer support group led by a social worker. It is comprised of two 2.5-hour group sessions where participants participate in activities designed to teach self-care, self-advocacy and improve transition to adulthood skills.

The primary outcome is successful transition to an adult provider, as evidenced by at least 1 visit with an adult provider within 10 months of the baseline visit.

Self-care and transition related skills will be measured pre- and post- intervention with the Transition Readiness Assessment Questionnaire (TRAQ). The TRAQ is a validated 33-item self-administered tool that measures skills needed to progress towards independence in key areas of life like education and work as well as skills needed to successfully transition from pediatric to adult healthcare. The TRAQ will be completed over the phone or via an online survey with young adult participants and their caregivers at baseline and at the 6-month follow-up visit.

Self-reported satisfaction with the intervention will be assessed at 6-months post-baseline via a phone interview or online survey.